Is there any seo tool that helps to give the accurate results of search engine ranking?

Yes you can use advance web ranking tools, its paid but you can use it for 1month trial version.

smallseo tools is the best tool to find out the accurate results on SERP's


online reputation management services

Google webmaster tool is the best way to check your SERP.

There are so many tools for rank checking but manually ranking checking is best way to get correct position of any keyword.

You can use SEMRUSH to check SERP rankings for your website keywords.

semrush and ahere is best tools for checking keyword position